| 3 | * Sheets registry to access all instances in one place. |
| 4 | */ |
| 5 | export default class SheetsRegistry { |
| 6 | registry = [] |
| 7 | |
| 8 | /** |
| 9 | * Current highest index number. |
| 10 | */ |
| 11 | get index() { |
| 12 | return this.registry.length === 0 ? 0 : this.registry[this.registry.length - 1].options.index |
| 13 | } |
| 14 | |
| 15 | /** |
| 16 | * Register a Style Sheet. |
| 17 | */ |
| 18 | add(sheet) { |
| 19 | const {registry} = this |
| 20 | const {index} = sheet.options |
| 21 | |
| 22 | if (registry.indexOf(sheet) !== -1) return |
| 23 | |
| 24 | if (registry.length === 0 || index >= this.index) { |
| 25 | registry.push(sheet) |
| 26 | return |
| 27 | } |
| 28 | |
| 29 | // Find a position. |
| 30 | for (let i = 0; i < registry.length; i++) { |
| 31 | if (registry[i].options.index > index) { |
| 32 | registry.splice(i, 0, sheet) |
| 33 | return |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Reset the registry. |
| 40 | */ |
| 41 | reset() { |
| 42 | this.registry = [] |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Remove a Style Sheet. |
| 47 | */ |
| 48 | remove(sheet) { |
| 49 | const index = this.registry.indexOf(sheet) |
| 50 | this.registry.splice(index, 1) |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Convert all attached sheets to a CSS string. |
| 55 | */ |
| 56 | toString({attached, ...options} = {}) { |
| 57 | const {linebreak} = getWhitespaceSymbols(options) |
| 58 | let css = '' |
| 59 | for (let i = 0; i < this.registry.length; i++) { |
| 60 | const sheet = this.registry[i] |
| 61 | if (attached != null && sheet.attached !== attached) { |
| 62 | continue |
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